package com.itheima.controller;


import com.alibaba.fastjson.util.IOUtils;
import com.itheima.common.R;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;

@RestController
@RequestMapping("/common")
public class CommonController {
    @Value("${reggie.path}")
    private String path;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) throws IOException {
        String originalFilename = file.getOriginalFilename();
        String substring = originalFilename.substring(originalFilename.lastIndexOf("."));
        String fileName = UUID.randomUUID().toString() + substring;

        File file1 = new File(path);
        if (!file1.exists()){
            file1.mkdirs();
        }
        file.transferTo(new File(path + fileName));
        return R.success(fileName);
    }

    @GetMapping("/download")
    public void download(String name, HttpServletResponse response) throws IOException {
        FileInputStream fis = new FileInputStream(new File(path + name));
        ServletOutputStream outputStream = response.getOutputStream();
        response.setContentType("image/jpg");
        int len = 0;
        byte[] bytes = new byte[1024];
        while ((len = fis.read(bytes)) != -1){
            outputStream.write(bytes,0,len);
            outputStream.flush();
        }

        outputStream.close();
        fis.close();



    }




}

